Darius is 30 years younger than Vivian. 9 years ago, Vivian's age was 3 times Darius's age. How old is Darius now?

Answer 1

D = V -30

3(D-9) = V-9

3(V-30-9) = V-9

3V -117 = V-9

2V = 108

V=54, D=24 = Darius' age now

nine years ago they were 45 and 15

3 times 15 = 45